Likes:
Things with holes, snaps buckles, counters, buckles, textures, shapes.
Slots, apertures, hinges, wheels, buttons, switches; observing cause and effect.
Stacking, connecting, clicking, joining, breaking.
Getting inside boxes, and under sheets. Jumping.
Running, riding his bike. Walking down the mountain.
Swimming and spa pool and bath.
Hopping in and out of the car.
Swinging.
Music.
New toys he hasn't seen before.
Photos of friends and family
Building Blocks - but only a bit now.
things that go up and down.
Trampoline.
Climbing.
Play fighting esp on the bed (pillow fight).
Play dough.
Sand and gravel.
Goes through cycles, i.e. does cars to death then gets bored and won't show interest for a year or so.
Cuddles.

Currently not interested in:
TV, Puzzles, books, toy cars, trains, balls, drawing.

Does not use imagination. But likes it when others do e.g. the cake game, pretending with dolls. Puppets - he takes them literally a bit (e.g. the Connex monster).
When using play dough or blocks doesn't really want to make structures or anything but just likes to join blocks and squish play dough. Likes to sort counters by colour, in lines etc.